>  If you're interested, let me know, if now, let me go on to my next
> project, which is to create a super efficient algorythm for displaying
> height fields in opengl (can effectively be used in povray to reduce
> triangle count in mesh), using various algorythm such as dynamic LOD
> (Level of Detail), etc...

Google for "ROAM".  Note that because 3D cards a so fast now, in some 
instances it's actually faster to just give the 3D card all the triangles 
rather than trying to use some clever adaptive method.

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